I got the app from the Google Play Store via the 'App Lounge' App in /e/OS, which gives access to all Play Store apps, either anonymously or using a Google account, and it worked perfectly for a long time, including the maps feature. The Maps feature still works, until I try to open a day's entry from it, and uses an app called Map Libre, but the native maps app in /e/OS is Magic Earth. All Google services and components are replaced MicroG and others.